77790799 has 8 divisors (see below), whose sum is σ = 79887248. Its totient is φ = 75720960.

The previous prime is 77790763. The next prime is 77790809. The reversal of 77790799 is 99709777.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77790799 - 2¹⁷ = 77659727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77790709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 657 + ... + 12490.

It is an arithmetic number, because the mean of its divisors is an integer number (9985906).

Almost surely, 2^77790799 is an apocalyptic number.

77790799 is a deficient number, since it is larger than the sum of its proper divisors (2096449).

77790799 is a wasteful number, since it uses less digits than its factorization.

77790799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13305.

The product of its (nonzero) digits is 1750329, while the sum is 55.

The square root of 77790799 is about 8819.9092398958. The cubic root of 77790799 is about 426.8835413417.

The spelling of 77790799 in words is "seventy-seven million, seven hundred ninety thousand, seven hundred ninety-nine".